(Juni 2005) The interplanetary medium controls the energy input into the Earth’s magnetosphere and the development of magnetic storms, in short: Space Weather. Numerously reported, but still poorly understood, correlations between solar activity and climate variations have recently been related to the flux of high-energy cosmic ray particles from space and the Sun.

No other single physical quantity can be used for such a variety of studies related to our planet. Highly accurate and frequent measurements of the magnetic field will provide new
insights into the Earth’s formation, dynamics and environment,
stretching all the way from the Earth’s core to the Sun.